Ground fault circuit interrupters should be located?

Ground Fault Circuit Interrupters (GFCIs) are critical safety devices designed to protect individuals from electric shock by cutting off power when an imbalance in the electrical current is detected. The correct option is that GFCIs should be located on cords with three-prong connections because they ensure proper grounding for the electrical devices being used.

Three-prong connections are made up of a hot wire, a neutral wire, and a ground wire. The ground wire is essential for GFCI operation, as it provides a path for stray electrical currents, significantly reducing the risk of electrical shock. When utilizing three-prong plug connections, integrating a GFCI helps to enhance safety, particularly in environments where moisture and electrical equipment may come into contact, like construction sites or outdoor settings.

Options that suggest placing GFCIs at the source of power, closest to the power tool, or on individual extension cords do not fully leverage the protective capabilities offered by a three-prong connection. These placements may not adequately address potential fault conditions in the system or might neglect situations where the device is moved away from the power source, thereby not providing effective shock protection. Therefore, employing GFCIs on cords with three-prong connections maximizes safety and compliance with electrical codes.